Laurent Goujon created CALCITE-2290:
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Summary: Type mismatch during flattening
Key: CALCITE-2290
URL: https://issues.apache.org/jira/browse/CALCITE-2290
Project: Calcite
Issue Type: Bug
Components: core
Reporter: Laurent Goujon
Assignee: Julian Hyde
The following query causes Calcite not being able to perform SQL to Rel
conversion:
{code:sql}
select (res1 = 'qwe') res2 from (select (case when (false) then null else 'qwe'
end) res1 from (values(1)))
{code}
While adding the query to {{SqlToRelConverTest}}, the test generates the
following output:
{noformat}
java.lang.AssertionError:
type mismatch:
ref:
CHAR(3) CHARACTER SET "ISO-8859-1" COLLATE "ISO-8859-1$en_US$primary"
input:
CHAR(3) CHARACTER SET "ISO-8859-1" COLLATE "ISO-8859-1$en_US$primary" NOT NULL
at
org.apache.calcite.test.SqlToRelConverterTest.testCaseFlatten(SqlToRelConverterTest.java:2786)
{noformat}
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